Application and advantages of polyurethane catalyst DMDEE in surface treatment of medical devices 1. Introduction: From “behind the scenes” to “before-stage star” In the field of modern medical devices, there is a seemingly inconspicuous but indispensable chemical substance – the polyurethane catalyst DMDEE (N,N,N’,N’-tetramethyl-1,4-butanediamine). It is like an unknown “behind the scenes hero” who plays...